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15.1 Forces and springs

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Question 45
H

A spring is tested twice. After each test, all the loads are removed.

TestMaximum force in N\mathrm{N}NForce–extension relationship during loadingFinal unloaded length in cm\mathrm{cm}cm
P4.0Linear through the origin10.0
Q7.0Curves above 5.0 N11.5

The spring was 10.0 cm long before either test. Which conclusion is justified?

[1]
A

P shows permanent distortion; Q shows non-linear behaviour without permanent distortion.

B

P shows permanent distortion; Q shows both non-linear behaviour and permanent distortion.

C

P shows elastic behaviour; Q shows non-linear behaviour without permanent distortion.

D

P shows elastic behaviour; Q shows both non-linear behaviour and permanent distortion.

Markscheme

15.1 Forces and springs Questions

  1. GCSE
  2. /Physics
  3. /15.1 Forces and springs

102 exam-style questions on Edexcel GCSE Physics 15.1 Forces and springs, covering 15.1.1 Elastic and inelastic distortion, 15.1.2 The spring constant, 15.1.3 Work done in stretching a spring, and 15.1.4 Linear and non-linear force–extension. Each one has a worked solution and a mark scheme showing where the marks go.

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